It’s been a busy few days for Nokia. First, the Finnish handset maker announced that former Microsoft manager Stephen Elop would be taking over CEO duties from Olli-Pekka Kallasvuo. And now comes another shakeup in the form of Nokia executive Ansii Vanjoki stepping down from his position as head of Nokia’s Mobile Solutions unit following the hiring of Elop.

Vanjoki, who joined Nokia in 1991 and has been head of Mobile Solutions since 2008, has a six-month notice period and will continue with his current tasks for the time being, Nokia said in a statement on Monday.

“I felt the time has come to seek new opportunities in my life,” said Vanjoki, an outspoken and respected figure in the mobile phone industry who was considered the most likely internal candidate to replace CEO Olli-Pekka Kallasvuo.

At Nokia, Vanjoki was responsible for the company’s high-end smartphone lineup, an area where they’ve failed to come up with a worthy competitor to the iPhone.